Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening

Abstract A three-dimensional phase-field model is developed to simulate grain evolutions during powder-bed-fusion (PBF) additive manufacturing, while the physically-informed temperature profile is implemented from a thermal-fluid flow model. The phase-field model incorporates a nucleation model base...

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Autores principales:	Min Yang, Lu Wang, Wentao Yan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
Acceso en línea:	https://doaj.org/article/f0980c02cfa746b5b4959bbc62778993
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id	oai:doaj.org-article:f0980c02cfa746b5b4959bbc62778993
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spelling	oai:doaj.org-article:f0980c02cfa746b5b4959bbc627789932021-12-02T17:39:17ZPhase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening10.1038/s41524-021-00524-62057-3960https://doaj.org/article/f0980c02cfa746b5b4959bbc627789932021-04-01T00:00:00Zhttps://doi.org/10.1038/s41524-021-00524-6https://doaj.org/toc/2057-3960Abstract A three-dimensional phase-field model is developed to simulate grain evolutions during powder-bed-fusion (PBF) additive manufacturing, while the physically-informed temperature profile is implemented from a thermal-fluid flow model. The phase-field model incorporates a nucleation model based on classical nucleation theory, as well as the initial grain structures of powder particles and substrate. The grain evolutions during the three-layer three-track PBF process are comprehensively reproduced, including grain nucleation and growth in molten pools, epitaxial growth from powder particles, substrate and previous tracks, grain re-melting and re-growth in overlapping zones, and grain coarsening in heat-affected zones. A validation experiment has been carried out, showing that the simulation results are consistent with the experimental results in the molten pool and grain morphologies. Furthermore, the grain refinement by adding nanoparticles is preliminarily reproduced and compared against the experimental result in literature.Min YangLu WangWentao YanNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Computer softwareQA76.75-76.765ENnpj Computational Materials, Vol 7, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765 Min Yang Lu Wang Wentao Yan Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening
description	Abstract A three-dimensional phase-field model is developed to simulate grain evolutions during powder-bed-fusion (PBF) additive manufacturing, while the physically-informed temperature profile is implemented from a thermal-fluid flow model. The phase-field model incorporates a nucleation model based on classical nucleation theory, as well as the initial grain structures of powder particles and substrate. The grain evolutions during the three-layer three-track PBF process are comprehensively reproduced, including grain nucleation and growth in molten pools, epitaxial growth from powder particles, substrate and previous tracks, grain re-melting and re-growth in overlapping zones, and grain coarsening in heat-affected zones. A validation experiment has been carried out, showing that the simulation results are consistent with the experimental results in the molten pool and grain morphologies. Furthermore, the grain refinement by adding nanoparticles is preliminarily reproduced and compared against the experimental result in literature.
format	article
author	Min Yang Lu Wang Wentao Yan
author_facet	Min Yang Lu Wang Wentao Yan
author_sort	Min Yang
title	Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening
title_short	Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening
title_full	Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening
title_fullStr	Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening
title_full_unstemmed	Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening
title_sort	phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f0980c02cfa746b5b4959bbc62778993
work_keys_str_mv	AT minyang phasefieldmodelingofgrainevolutionsinadditivemanufacturingfromnucleationgrowthtocoarsening AT luwang phasefieldmodelingofgrainevolutionsinadditivemanufacturingfromnucleationgrowthtocoarsening AT wentaoyan phasefieldmodelingofgrainevolutionsinadditivemanufacturingfromnucleationgrowthtocoarsening
_version_	1718379857535041536

Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening

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